Home / 3,120.63-4,306.49-1,878.63

Finding the Fourth Proportional to 3,120.63, 4,306.49 and 1,878.63

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Solution

The fourth proportional to 3,120.63, 4,306.49 and 1,878.63 is: 2,592.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.63 : 4,306.49 = 1,878.63 : x
  2. Step 2: Convert to fraction form
    3,120.63/4,306.49 = 1,878.63/x
  3. Step 3: Cross multiply
    3,120.63x = 4,306.49 × 1,878.63
  4. Step 4: Simplify right side
    3,120.63x = 8,090,301.31
  5. Step 5: Solve for x
    x = 8,090,301.31/3,120.63
  6. Step 6: Final answer
    x = 2,592.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.